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add safety tests inside ShuttleControl to deal with _session == 0

This commit is contained in:
Paul Davis 2019-12-14 09:58:53 -07:00
parent 9743d75fc2
commit ab7b5c6089
1 changed files with 18 additions and 5 deletions
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23
gtk2_ardour/shuttle_control.cc
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@ -157,7 +157,13 @@ ShuttleControl::on_size_allocate (Gtk::Allocation& alloc)
void
ShuttleControl::map_transport_state ()
{
float speed = _session->actual_speed ();
float speed;
if (!_session) {
speed = 0.0;
} else {
speed = _session->actual_speed ();
}
if ( (fabsf( speed - last_speed_displayed) < 0.005f) // dead-zone
&& !( speed == 1.f && last_speed_displayed != 1.f)
@ -261,6 +267,10 @@ ShuttleControl::build_shuttle_context_menu ()
void
ShuttleControl::reset_speed ()
{
if (!_session) {
return;
}
if (_session->transport_rolling()) {
_session->request_transport_speed (1.0, true);
} else {
@ -552,10 +562,13 @@ ShuttleControl::use_shuttle_fract (bool force, bool zero_ok)
}
requested_speed = speed;
if (zero_ok) {
_session->request_transport_speed (speed, Config->get_shuttle_behaviour() == Wheel);
} else {
_session->request_transport_speed_nonzero (speed, Config->get_shuttle_behaviour() == Wheel);
if (_session) {
if (zero_ok) {
_session->request_transport_speed (speed, Config->get_shuttle_behaviour() == Wheel);
} else {
_session->request_transport_speed_nonzero (speed, Config->get_shuttle_behaviour() == Wheel);
}
}
}